CVE-2018-1140 Denial of service in samba
An attacker can cause a denial of service against a Samba server acting as an Active Directory Domain Controller due to missing input sanitization in the LDP database.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-1140?
CVE-2018-1140 is a medium-severity denial of service vulnerability in Samba Samba, published on 22 Aug 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A missing input sanitization flaw was found in the implementation of LDP database used for the LDAP server. An attacker could use this flaw to cause a denial of service against a samba server, used as a Active Directory Domain Controller. All versions of Samba from 4.8.0 onwards are vulnerable
Weakness: CWE-20
Which versions are affected by CVE-2018-1140?
It affects 1 product.
Products include Samba Samba.
How do I fix CVE-2018-1140?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2018-1140 being exploited?
There is no known exploitation of CVE-2018-1140 in the wild and no public exploit code.
Other vulnerabilities in Samba Samba
Sources
Also known as ALPINE-CVE-2018-1140, DEBIAN-CVE-2018-1140, ECHO-de15-31c1-c2e8, GHSA-7rxg-m3xw-pq9p.